/*
 * @Description: 
 * @Author: wangchao
 * @Date: 2023-02-08 16:51:24
 */
var name = 'window'
var person1 = {
  name: 'person1',
  show: function () {
    return () => console.log(this.name)
  }
}

var person2 = { name: 'person2' }

person1.show()()
person1.show().call(person2)
person1.show.call(person2)()